Surfacing machine



Spt. 11, 1934. R. b. ANDERSON I 1,973,597

SURFAGING MACHINE Filed July 9, 1932 2 Sheets-Sheet 1 IN V EN TOR.

p 9 R. D. ANDERSON 1,973,597

SURFACING MACHINE Filed July 9, 1952 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY.

Patented Sept. 11, 1934 UNITED STATES 1,973,597 SURFACING MACHINE Richard D..Anderson, Baton Rouge, La., assignor to Standard Oil Development Company, a corporation of Delaware;

Application July 9, 1932, Serial No. 621,693

1, Claim.

5 the accompanying drawings in which latter Fig. 1 is a longitudinal sectional view through the facing machine and a hollow body to be faced.

Fig. 2 is a top plan view of themachine with parts broken away. I

Fig.3 is a sectional view taken alongthe line 3-3 of Fig. 2.

Fig. 4 is a top plan v iew of the cutter frame.

Fig. 5 is a longitudinal sectional view of a modified form of facing machine, and

Fig. 6 is a front view of the cross-head.

Referring particularly to Figs. 1 to 4 of the drawings, the machine is illustrated as applied for use in surfacing the seat 1 of a soaking drum 2 such as the 750 pound and 1000 pound per square inch coal soaking drums used in the cracking of petroleum oils. It will be understood that other hollow annular bodies can be similarly resurfaced.

The device comprises a body portion which includes a tubular column or adapter 4 to one end of which is secured an annular plate 6. The plate 6 is affixed to the column 4 by means of dowel pins 7 and by means of an annular band formed of rings 8 and 9 which are threaded together, the band being welded or otherwise secured both to the column 4 and to the plate 6.

The column 4 carries rotatably on its exterior a collar 15. The collar is tracked between the plate 6 and an annular flange 16 projecting outwardly from the column 4. The collar 15 is machined to fit perfectly upon the circumference of the column. The collar 15 is recessed at 17 upon its inner surface and is fitted with grease gun connections not shown whereby the recess can be filled with thick grease under pressure. The collar 15 carries non-rotatably a ring gear 20.

The collar 15 is driven in rotation by means of a motor not shown which is supported upon a bracket 21 projecting from the plate 6. The motor is operatively connected with a tapered shank spindle 23 journaled in a frame 24. Secured on the spindle 23 is a pinion 25 which intermeshes with a gear 26 journaled in the frame 24. The gear 26 through its shaft 27 drives a pinion 28 which in turn meshes with the gear 20 upon the collar 15.

Rotation of the collar 15 carries a cutter frame 32 in rotation. The head 33 of the cutter frame 32 is secured by means of bolts 34 to the annular collar. In the construction illustrated the cutter frame is inclined, upwardly from the collar. An intermediate portion of the cutter frame is cut away at 36 to form, a radiallyoutwardly extending guideway for a tool holder 37 which is mounted for adjustment longitudinally of the cutter frame. Longitudinal adjustment of the cutter frame is effectedby means of a feed screw 40. The feed screw is rotated by means of a star feed 42. The longitudinal position of the feed screw with respect to the cutter frame is maintainedconstant by means of a collar 43' affixed to the feed sorewandrotatably disposed within a recess 44 in the cutter frame. The feed screw has threaded engagement with the tool holder 37. A cutter 45 protrudes downwardly from the tool holder 3'7. The vertical position of the cutter with respect to the tool holder is adjusted by means of a dowel pin 46. The dowel pin 46 is threaded into the tool holder 37 substantially at right angles to the cutter 45 and is provided with a tapered end which adjustably engages the base of the cutter.

In setting up the apparatus within the hollow article to be surfaced the column 4 is inserted within the article and is secured in position by means of bolts 50, which are adjustably threaded into openings 51 in the column 4. Annular flanges 52 preferably reenforce the column 4 at the openings 51. In the preferred embodiment eight expansion screws are used to secure the column rigidly against the interior of the soaking drum or other article to be surfaced. The adjustment of the expansion screws permits tilting of the machine and the machine can be readily set to conform with the surface of the flange 1 of the soaking drum regardless of whether the flange is square in the walls of the aperture or not. The hollow construction of the column permits of easy access to the expansion screws at all times. Consequently the machine can be given a final check up for preferred alignment using the cutting tool as an indicator.

Actuation of the machine to rotate the collar causes the cutter to be carried in rotation around the machine in engagement with the flange to be surfaced thereby effecting cutting of the flange. The injection of thick grease under pressure between the collar 15 and the column eliminates chattering of the cutting tool and makes possible a high finish such as is required for a perfect joint without a gasket. contained including the motor and the mounting for the several tool holders for different classes of machine work on a flange. Since the machine is attached entirely inside of the member to The machine is self be machined it is possible to machine the entire outside of the flange. The cutting range of the cutting tool is limited only by the length of the tool holder.

It is contemplated to provide wedges between the cutter frame head 33 and the ring 15 whereby the cutting plane can be altered in angle with respect to the machine. Different tool heads for different classes of flange machine work can be attached to the machine in the same manner to vary the machine work range.

or with a line or level.

Referring to Figs. 5 and 6 of the drawings a modified form of facing machinemore particularly designed for facing the flange of a 250 pound per square inch cracking coil soaking drum used in the cracking of petroleum oil is illustrated. In this modification the body portion of the machine is formed of a column or adapter 4 of relatively small size. The bearing for the rotatable collar 15 is formed by an annular ring which is secured to the column 4 by means of an annular member 56.

A modified structure for securing the cutter frame 32 to the annular collar 15 is shown which includes a cross-head'GO which is secured to the collar 15 by means of bolts 61. A portion of the cross-head is cut vaway to provide a support for the cutter frame 32.

7 Various changes may be made within the scope of the appended claims in which it is desired to The frame 21' facilitates setting the machine with a spacer block face of the body portion in spaced relation to the upper end, a collar, carrying a ring gear at its upper end and having a lubricant receiving recess on its inner face, rotatably mounted on the upper end of the body portion and supported by the exterior annular flange thereon and a cutter frame adjustably associated with the rotatable collar and carrying a cutter tool in position to engage the article, an annular cover plate for the body portion of substantially greater diameter than said body portion, adapted to form a bearing surface for'the upper end of themtatably mounted collar and ring gear, having an exteriorly threaded annular flange extending downwardly from its lower face, to engage the interiorly threaded flange on the inner faceof the body portion, and means for maintaining such engagement, gears carried by the cover plate to engage the ring gear and means adapted to support a motor in engagement with the gears.

RICHARD D. ANDERSON. 

